I think he was living a clean lifestyle recently. He was born with diabetes and is always watching that closely. He seems to care about his health. I would bet its a weakness in an artery that he was born with.
I worked security for some Poison concerts in 1989-1990 and those guys were very nice guys.Brett was always very polite and outgoing talkative etc...
Those guys knew how to throw a party though!! I saw some things
I wish him a speedy recovery.